Protecting critical infrastructure

Industrial systems often remain in service for many years. Some have limited security capabilities or depend on software that cannot be updated as easily as a typical business application.

Maintenance windows may be infrequent, and changes can require engineering review or supplier involvement. These constraints make it important to understand risk and plan improvements carefully.

Controls must reflect the environment rather than assume that standard IT practices can be applied without adjustment.

Connections between IT and OT support business operations, but they can also provide routes through which disruption spreads.

Remote maintenance and supplier access introduce further considerations. Your organisation needs to know who can connect, which systems they can reach and how that activity is controlled.

An incident does not have to compromise an industrial controller directly to interrupt production. Problems affecting supporting systems can still prevent an operation from functioning.

AI-assisted attack techniques add pressure to identify and address weaknesses. Introducing AI into operational workflows also creates dependencies that require assessment.

These developments need to be considered alongside established risks such as unauthorised remote access, poor segmentation and limited asset visibility.

Your teams need a clear picture of critical assets and the likely consequences of an incident so they can prioritise action.

Our OT consulting services help you assess risk and define a practical approach to improving security.

We support strategy, governance, compliance and policy implementation, alongside training, awareness and OT CISO as a service. This helps connect cybersecurity decisions with operational responsibilities.

The resulting direction should give your teams clear priorities while recognising the resources and constraints involved in delivering change.

Our OT Security Auditing services examine organisational arrangements, policies, infrastructure and physical security.

We also provide targeted audits, OT penetration testing and ransomware resilience testing. Activities are scoped around the characteristics of your environment, with operational constraints considered when determining the approach.

Assessments help identify weaknesses and provide a basis for deciding which improvements are most important.

Our OT Security Engineering services support security projects from technical specification through implementation and integration.

We help you introduce and maintain security capabilities within the wider operational environment. Services also include technical support, solution support and maintenance.

This connects the identification of risks with the practical work needed to address them.

Our SOC monitors your OT environment for suspicious activity, with investigation and escalation aligned to the agreed service.

We support standalone OT monitoring or combined IT and OT environments. This helps connect relevant security activity across operational and supporting systems.

Clear escalation arrangements support timely decisions by the teams responsible for the environment.

This service provides ongoing specialist support to strengthen operational resilience and incident preparedness.

Major incident response assistance is available 24/7, supporting your organisation when specialist help is needed. Preparation helps establish responsibilities and improve coordination before an incident occurs.

The scope reflects your operational requirements and the response support agreed with your organisation.

We provide comprehensive governance, risk and compliance support, including control mapping, gap assessments and reporting aligned to leading OT and cybersecurity frameworks. Our expertise covers IEC 62443, UK CAF, NIS2, ISO/IEC 27001 and NIST, helping organisations demonstrate compliance, strengthen security maturity and meet regulatory obligations. The scope and approach are tailored to your operational environment, industry requirements and business objectives.

Our Managed Network Security service helps organisations secure critical operational environments by managing and monitoring network segmentation across the Purdue Model. Aligned with IEC 62443 best practices, it strengthens resilience, limits cyber risk and helps protect industrial operations from evolving threats.

Effective network segmentation is a cornerstone of OT security, helping to control communications within operational environments and between IT and OT systems. Our Network Detection & Response (NDR) service provides visibility into network activity, supports the management of security controls across OT zones and conduits, and helps identify suspicious or unauthorised behaviour before it can impact operations.

By aligning security monitoring and network controls with your architecture and operational requirements, we help reduce the risk of lateral movement, limit unauthorised access, and strengthen the resilience of critical industrial systems.